Scraper



July 26, 1927.

I SGRAPER Original Filed Nov. 26, 1924 A. B. ESSELTINE 2 Sheets-Sheet. 1

1,637,073 y 26, 1927- A. B. ESSELTINE SCRAPER Original Filed Nov. 26.924 2 Sheets-Sheet 2 Jflmd Esseliz'ne Zd-Em'ss f? Patented July 26, 19f

UNITED STATES PATENT OFFICE.

ALFRED B. ESSEL'IINE, or CHICAGO, ILLINOIS, ASSIGNOR T GOODMANMANUFACTUR- me COMPANY, OF CHICAGO, ILLINOIS, A.

CORPORATION OF ILLINOIS.

SCRAPER.

Application filed November 26, 1924, Serial No. 752,292, and in CanadaMarch 24, 1924. Renewed January This invention relates to improvementsin draft operated scrapers used for gathering and transporting loosematerial and.

more particularly to the type or" scraper disclosed in my priorapplication. bearing Serial Number 683.116. filed December 28,

1923. and has for its principal object to provide an improvedautomatically adjustable and movable tail rope connection.

As in my prior application mentioned above. the scraper herein disclosedis capable of being initially deflected from its normal path of movementto gather loose material distributed over relatively wide areas. It mayalso be automatically opened and used in either a. right or left-handoperation with equal facility without change in construction. andprovides an improved method of gathering coal or the like from a mineroom.

A scraper having movable side walls is provided, said walls beingpivotally connected at the rear end thereof. such scraper beingreciprocably movable by means of a head rope and a tail rope. in thepresent instance the latter having movable connection along a togglemember at the rear end ot the scraper. Means are also provided forengaging the side of the toggle member lying adjacent the outer side ofthe scraper, i. e., the side away from the working face. whereby thescraper is automatically opened when drawn rearwa-rdly toward the tarcorner of the room and its initial forward movement will be directedlaterally to gather the loose material at one'side of its normal path ofrearward movement, that is, toward the working face of the mine.

Details of this invention may be best understood by reference to theaccompanying drawings, in which:

Figure 1 is a rear view in perspective of a scraper constructed inaccordance with my invention;

Figure 2 is a plan view of the scraper showing it in closed position infull lines and partially opened in dotted lines;

Figures 3. 4 and 5 and 6 are views illustrating a typical installationof the scraper in a mine and showing it in tour diflerent positionsduring a loading operation.

Referring now to details. the scraper comprises a body made up of twoside walls 10, 11, preferably diverging from the rear to the front endthereof, although other forms and shapes of scraper body may beprovided, if desired. The scraper is preferably bottomless. the walls 10and 11 being provided with inwardly extending flanges .12, 12, alongtheir lower margins to form cutting edges for engaging the material tobe gathered. The walls 10 and 11 are pivotally connected by av hinge,which may be of any suitable form, for instance, it may comprise a pairof eyes, 13. 13, on one wall 10, and an intermediate eye 15 on the otherwall 11, with a hinge pin 15 of any approved pattern eXt-endingtherethrough. As shown herein the side walls 10, 11, are hingedcentrally ot' the rear end although undersome conditions it may bedesirable to vary the posi tion of the hinged connection toward one sideof the scraper.

Means are provided for limiting the movement of the scraper sides towardeach other. In the form shown this means comprises a pair of telescopingmembers 16 and 17 pivotallv connected respectively near the forward endsof the scraper walls. As shown herein the member 16 comprises a bar andis movable longitudinally in a. hollow pipe forming the member 17. Thearrangement is such that the free end gages a stop 18 on the bar tolimit the inward movement of the walls 10 and 11.

As shown herein the tail rope connection comprises a link 28 having aroller 26 thereon, secured in movable engagement with the inner edge ofan arcuate toggle member 27, thus permitting free movement of the rollerand toggle with respect to each other. The outer ends of the togglemember 27 are piv otally joined at 31 and 32 respectively to one end ofthe links 34 and 35. The inner end of the link 34 is pivotally securedto the adjacent wall 10 of the scraper'by means of a pin 36 in a bearing37, herein formed integral with the eye' 14. Similarly the inner end oflink 35 is pivotally secured to the wall 11 by a pin 38 extendingthrough the bearings 39, herein formed integral with the eyes 13, 13.The arrangement is such that an unobstructed. normal pull rearward onthe tail rope 22 will not tend to open the scraper, but when either sideof the toggle member 27 comes into contact with a stop or the like, asfor eXample'the arm 27 contacting with the stop 10, the former is forcedinwardly of the pipe l'tenwith the link toward the scraper wall 11.

and causes the pivotal connection 28 and the link 35 to be forcedoutwardly from the wall 10, whereby a pull is exerted in a direction toforce the wall outward or open with respect to the opposite wall 11. Itwill be apparent'that at the same time the arm 27 contac with the stop40 the roller 26 and link 28, to which the tail rope connected, willmove over toward the opposite arm 27*, well beyond the center line ofthe toggle member 27, and thus add or exert an additional pull to forcethe scraper open. Similarly, a contact between the arm 27 and the stopa0 would force the former, together with the link 35, inwardly towardthe scraper wall 10, whereby a pull would be exerted upon the wall 11through the pivotal connection 29 and the link 84;, and the tail ropewould move beyond the center point of thetoggle member 27 toward the arm27.

The use and operation of'the scraper above described will be understoodby reference to Figures 3, at, 5 and 6, illustrating its use in a mineroom. In this instance the scraper is i being used for gathering loosematerial adjacent the working face, indicated at 30. A side wall, or rib33 meets the working face 30 at an angle, forming a corner as shown inthese figures. In Figure 4 a pile of loose material has been depositedon the floor ad jacentthe working face, the toe or forward edge of thispile being indicated at 42. The Scraper is'installed for reciprocablemovement in the usual manner along the working face, as well known tothose familiar with mining methods. The tail rope 22 is trained over asheave or guide &1 fixed by a jack or similar means against the sidewall or rib 33 and adjacent the working face 80, substantially as shownin the diagram.

In the loading operation the scraper is pulled rearwardly by the tailrope which is engaged with the toggle member 27, substantially inalignment with its longitudinal axis. As the scraper approaches thecorner of the room, as shown in Figure 4, one side of the member 27 willbecome engaged with the stop 4:0, which herein is preferably a mine jackof the usual type, whereby further draft on the scraper will cause it toswing about at an angle to its normal course of rearward movement.Simultaneously, this movement tends tb swing the scraper side 10pivotally on its hinge into an open position. In Figure 5 the scraper isshown in its farthest position adjacent the sheave 41, in which positionthe tension on the tail rope is released. It will be observed that thehinged portions or walls 10 and 11 are fully spread apait so that thehead rope terminals 21, 21 are substantially in a straight line to limitfurther movement of the walls. The scraper is thus automatically broughtinto position to initially engage the pile of loose material whiledirected toward the working face. Obviously, the stop or jack 40 may bepositioned at will to actuate the scraper at any desired point and maybe placed on either side of the tail rope to direct the scraper towardthe opposite side. Furthermore, the tail rope sheave or guide l-l may beused as a stop when the scraper is to be moved into the far corner ofthe room. The use of the guide d1 in this manner is illustrated indotted lines in Figure 2.

lVhile I have shown and described one form in which my invention may beembodied it will be understood that the ar rangement and construction ofthe parts may be altered without departing from the spirit and scope ofthe invention. Furthermore, I do not wish to be understood as limitingmyself to the particular construction illustrated except as specificallylimited in the appended claims.

I claim as my invention:

1. A scraper provided with forwardly extending walls movable laterallywith respect to each other, toggle means at the rear end of the scraperhaving connection with both of said walls, and a tail rope havingmovable connection with said toggle adapted to produce balanced draft onsaid walls in one position of said toggle means, and to produceunbalanced draft in another position of said toggle means.

2. A scraper provided with forwardly extending walls movable laterallywith respect to each other, toggle means at the rear end of the scraperhaving connection with both of said walls, and a tail rope havingmovable connection with said toggle means to move the scraper in arearward direction, said toggle means being adapted to engage a a fixedstop at one side of said rope to swing said scraper at an angle to itsnormal path of rearward movement.

3. A scraper provided with forwardly extending walls movable laterallywith respect to each other, toggle means at the rear end of the scraperhaving connection with both of said walls, and a tail rope havingmovable connection with said toggle means to move the scraper in arearward direction, said toggle means being adapted to engage a fixedstop at one side of said rope and being operable to automatically opensaid walls.

4. A scraper provided with forwardly extending walls movable laterallywith respect to each other, toggle means at the rear end of the scraperhaving connection with both of said-walls, and a tail rope havin'g'movable connection with said toggle means to move the scraper in arearward direction, said toggle means being adapted to engage a fixedstop at one side of said rope and being operable to automatically openthe wall opposite the side engaged by said fixed support.

5. A scraper provided with forwardly extending walls movable laterallywith respect to each other, toggle means at the rear end of the scraperhaving connection with both of said walls, and a tail rope havingmovable connection with said toggle means to move the scraper in arearward direction, said toggle means being adapted to engage a fixedstop at either side of said rope to swing said scraper at an angle toits normal path of rearward movement.

6. A scraper provided with forwardly extending walls movable laterallywith respect to each other, and a rope having lateral movable connectionwith rocking member at the rear end of said scraper, said rocking memberbeing adapted to engage a fixed stop and operable to automatically opensaid movable walls.

7 A scraper provided with forwardly extending walls movable laterallywith respect to each other, and a rope having laterally movableconnection with a rocking member at the rear end of said scraper, saidrocking member being adapted to engage a fixed stop at one side of saidrope, operable to produce an unbalanced tension on said rocking member.

8. A scraper provided with forwardly extending walls movable laterallywith respect to each other, a head rope, and a tail rope havinglaterally movable connection with a rocking member at the rear end ofsaid scraper, said rocking member being adapted to engage a fixed stopat either side of said rope and operable to automatically open saidmovable walls.

Signed at Chicago in the county of Cook and State of Illinois, this 19thday of November, A. D. 1924.

ALFRED B. ESSELTINE.

